Comment by jweir

Tufte points out 1 + 1 is 3 or more visually. The two lines create two elements, then the space is another, then the space on either is potentially another.

http://csarven.ca/one-plus-one-equals-three-or-more

These textures are noisy. There can be occasions to use textures, but these examples would work just as well with shades of gray.